Control of Livestock Waste Odors Using Gas Sensors and Fuzzy Logic

Pollution from livestock waste causes poor air quality. This can be a problem for animals and humans around the livestock. This study has designed and realized a control system of livestock waste odor using fuzzy logic method implemented on the Arduino Due microcontroller. This system employs metal oxide semiconductor gas sensors to measure waste odor levels and an electronic valve with a nozzle used for spraying the yucca schidigera liquid as a deodorizing agent. The experimental results show that the fuzzy logic controller can reduce the odor pollutant levels within 4.5 minutes. In the uncontrolled livestock waste odor, the ammonia and hydrogen sulfide levels are 9.93 ppm and 1.16 ppm, respectively. Meanwhile, in the controlled livestock waste odor, the ammonia and hydrogen sulfide levels are 1.18 ppm and 1.13 ppm, respectively.